| Măreasca | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Arad County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Secaș |
| Length: | 11km (07miles) |
| Mouth: | Sighișoara |
| Mouth Location: | Brazii |
| Mouth Coordinates: | 46.2398°N 22.3308°W |
| Progression: | Sighișoara→ |
| Basin Size: | 25km2 |
The Măreasca is a left tributary of the river Sighișoara in Romania. It flows into the Sighișoara in Brazii. Its length is 11km (07miles) and its basin size is 25km2.